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2.
The act of drinking for the sole purpose of achieving the Shampoo Effect.
Dude, We got so drunk last night.

Yeah man, Let's go get lathered.
by Niggity Nate August 10, 2006
 
1.
state of drunkenness or buzz due to the shampoo effect.
It's gonna be a long day- I've had 2 drinks and I'm already lathered.
by SLampy January 07, 2006